diff --git a/util.c b/util.c
index c1d3ca4..d7ac27d 100644
--- a/util.c
+++ b/util.c
@@ -17,7 +17,12 @@
  *                                                                   USA
  */
 
-#include "dtc.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+
+#include "util.h"
 
 char *xstrdup(const char *s)
 {